Attempted to install NVidia 9800t on my Gateway GX7018E. Could not get Windows 7 to recognize the video card plugged into the pci-e slot. Is there a way to force recognition? I have changed the BIOS info to recognize PCIE, and changed my video driver to base vga thru device manager.

Have you tried downloading the latest nvidia drivers? Or uninstall it and let Windows 7 detect by itself.Have you tried downloading the latest nvidia drivers? Or uninstall it and let Windows 7 detect by itself.

I have the disk with the drivers. Windows 7 will not detect. When I plug my vga into the card, my screen goes blank.I have the disk with the drivers. Windows 7 will not detect. When I plug my vga into the card, my screen goes blank.

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You have received some wrong information.
This motherboard has a PCI-e x16 slot(ver1.0), two PCI-X 66MHz, and two PCI 33MHZ slots..
The video card must go in the PCI-e x16 slot.
The x8 lanes are hardwired from the Tumwater chipset to the BCM5721 LAN chip, and are not accessible for use.
There is no x8 lane slot on this motherboard.

so...
your computer don't recognize your nvidia graphic card in PCI Express slot.
you are runing now with computer's integrated graphic card?
if so then you won't have dualview option. in this case it looks for me like you've installed in the wrong way your graphic card.

your NV GeForce 7300 GS has 2 video output?
if yes then you should have the option for 2 monitors on nVIDIA control panel (i have check my nVIDIA GeForce 7600gt and in my case this option is present but is enabled only if i connect the second monitor, so try do so)

Hi Juan016, you have done everything right. I'd say the 8800GT is bad & return it for a refund. Run the 8600GT & the NVIDIA 6100 at the same time. If you check the middle of page 9 in your manual. NOTE: It states; if a PCI-E is inserted the bios will automatically run the PCI-E card. (No need to make a bios setting change).It also says if you change the setting in the bios to, OnChip and PCIe VGA, the motherboard should run both. Depending what amount of memory you set the NVIDIA to run with. Once in windows check the amount of total memory the NVIDIA or 8600GT reports.Example: You set the NVIDIA to use 64MB & the 8600GT has 512MB than the NVIDIA or the 8600GT should show 576MB. Its not that uncommon one buys a bad video card. Reading the manual & windows not seeing the 8800GT tells me the bios did not see the 8800GT card. The card is bad. You’re doing just fine.